Home / 130,752,140.10-196,128,210.15-85,402,508.10

Finding the Fourth Proportional to 130,752,140.10, 196,128,210.15 and 85,402,508.10

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Solution

The fourth proportional to 130,752,140.10, 196,128,210.15 and 85,402,508.10 is: 128,103,762.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,752,140.10 : 196,128,210.15 = 85,402,508.10 : x
  2. Step 2: Convert to fraction form
    130,752,140.10/196,128,210.15 = 85,402,508.10/x
  3. Step 3: Cross multiply
    130,752,140.10x = 196,128,210.15 × 85,402,508.10
  4. Step 4: Simplify right side
    130,752,140.10x = 16,749,841,055,973,876
  5. Step 5: Solve for x
    x = 16,749,841,055,973,876/130,752,140.10
  6. Step 6: Final answer
    x = 128,103,762.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.