Home / 145,238.48-217,886.88-66,331.52

Finding the Fourth Proportional to 145,238.48, 217,886.88 and 66,331.52

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Solution

The fourth proportional to 145,238.48, 217,886.88 and 66,331.52 is: 99,510.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,238.48 : 217,886.88 = 66,331.52 : x
  2. Step 2: Convert to fraction form
    145,238.48/217,886.88 = 66,331.52/x
  3. Step 3: Cross multiply
    145,238.48x = 217,886.88 × 66,331.52
  4. Step 4: Simplify right side
    145,238.48x = 14,452,767,938.46
  5. Step 5: Solve for x
    x = 14,452,767,938.46/145,238.48
  6. Step 6: Final answer
    x = 99,510.60

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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.