Home / 128,002.10-176,642.53-70,641.01

Finding the Fourth Proportional to 128,002.10, 176,642.53 and 70,641.01

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Solution

The fourth proportional to 128,002.10, 176,642.53 and 70,641.01 is: 97,484.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,002.10 : 176,642.53 = 70,641.01 : x
  2. Step 2: Convert to fraction form
    128,002.10/176,642.53 = 70,641.01/x
  3. Step 3: Cross multiply
    128,002.10x = 176,642.53 × 70,641.01
  4. Step 4: Simplify right side
    128,002.10x = 12,478,206,523.84
  5. Step 5: Solve for x
    x = 12,478,206,523.84/128,002.10
  6. Step 6: Final answer
    x = 97,484.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.