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Finding the Fourth Proportional to 110,038.90, 151,854.32 and 64,718.80

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Solution

The fourth proportional to 110,038.90, 151,854.32 and 64,718.80 is: 89,312.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,038.90 : 151,854.32 = 64,718.80 : x
  2. Step 2: Convert to fraction form
    110,038.90/151,854.32 = 64,718.80/x
  3. Step 3: Cross multiply
    110,038.90x = 151,854.32 × 64,718.80
  4. Step 4: Simplify right side
    110,038.90x = 9,827,829,365.22
  5. Step 5: Solve for x
    x = 9,827,829,365.22/110,038.90
  6. Step 6: Final answer
    x = 89,312.32

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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.