Home / 130,752,129.60-196,128,194.40-85,402,497.60

Finding the Fourth Proportional to 130,752,129.60, 196,128,194.40 and 85,402,497.60

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Solution

The fourth proportional to 130,752,129.60, 196,128,194.40 and 85,402,497.60 is: 128,103,746.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,752,129.60 : 196,128,194.40 = 85,402,497.60 : x
  2. Step 2: Convert to fraction form
    130,752,129.60/196,128,194.40 = 85,402,497.60/x
  3. Step 3: Cross multiply
    130,752,129.60x = 196,128,194.40 × 85,402,497.60
  4. Step 4: Simplify right side
    130,752,129.60x = 16,749,837,651,538,332
  5. Step 5: Solve for x
    x = 16,749,837,651,538,332/130,752,129.60
  6. Step 6: Final answer
    x = 128,103,746.40

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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.