Home / 153,987.02-212,442.45-90,301.58

Finding the Fourth Proportional to 153,987.02, 212,442.45 and 90,301.58

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Solution

The fourth proportional to 153,987.02, 212,442.45 and 90,301.58 is: 124,581.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,987.02 : 212,442.45 = 90,301.58 : x
  2. Step 2: Convert to fraction form
    153,987.02/212,442.45 = 90,301.58/x
  3. Step 3: Cross multiply
    153,987.02x = 212,442.45 × 90,301.58
  4. Step 4: Simplify right side
    153,987.02x = 19,183,888,894.07
  5. Step 5: Solve for x
    x = 19,183,888,894.07/153,987.02
  6. Step 6: Final answer
    x = 124,581.21

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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.